Gang-mold.



No. 877,140. PATENTBD JAN. 21, 1908.

A. 0. THOMAS.

GANG MOLD.

APPLICATION FILED MAR.10,1906.

5 t wane/swig I 4M 0 22 42 :4135 7% @am wr/Zm pupa/Mm I V {WWW cordance with the invention. I plan view of a portion of a gang mold. Fig. 3

hasfor its object the pro vision of a device of AUGUSTUS 0. THOMAS, or KEARNEY, NEBRASKA.

eananoan Specification of Application filed'March 10 Letters Eateritd PatentedJan. 21,1908, 1906. Serial so. 806.291." i Y To all whom it may concern:

Be it known that I, AUGUSTUS 0. THOMAS, a citizen of the United States, residing at Kearney,.in the county of Buffalo and State of Nebraska, have invented certain new and I useful 'Im rovements in Gang Molds, of which the ollowin is a specification.

My invention re ates to gang molds and thischaracter adapted to mold a considerable number of Z shaped building blocks at a single operation. V i A further object of the invention is the provision of a mold such as described, the parts l of which may be readily assembled or taken apart when desired. 4

Further objects and advantages of the invention will be set forth in the detailed description which now fQllOWSZ In the accompanying drawing Figure 1 is a plan view of a gang mold constructed in ac- Fig. 2 is a is a detail perspective view of a skeleton end plug hereinafter described. Fig. lis a de tail perspective view of'a solid end plug hereinalter described. F ig. 5 is ahorizontal section through a portion of the mold, and Fig.

'6 is a transverse section upon'line 6 6 of like numerals designate corresponding parts in all the figures of the drawing.

Referring to thedrawing the numerals 5 and 6 designate the side walls. of the mold and the numerals 7 and 8 designate the end walls of the mold. The end walls of the mold are rabbeted as at 9 to receive the ends of the side walls. A plurality of Z shaped pallets 10 are diagonally disposed between the side walls 5 and 6 of the mold and have their ends beveled as at 11 in such manner that the ends of the pallets will rest'flush against the side walls 5 and 6. The pallets 10 are spaced from each other by plugs 12. These plugs are shown in Figs. 1, 4 and 5 as solid members.- VVhenplaced between the pallets the 1 side walls 13 of the plugs 12 rest flush against 1 the pallets 10. I The Walls of the plugs 12 which rest against the sidewalls 5 and 6 of the mold are bev eled as at 14 in-such manner as'to rest fiu'sh against said side walls of the mold while the I op osite -walls lli ofsaid plu s'are fornied atrig t-angles to the walls 13 t erect, and conse uently at right angles to the Walls of the pallets 10, whereby square ends will be pro vided upon the mold blocks which are formed by plasticlinaterial being placed in the mold spaces 16. I As is illustrated in Figs. 2 and 3- skeleton end plugs may be substituted for those shown in Figs. 1, 4 and 5 if desired. These plugs comprise angle plates having the walls 17 and 18 disposed'at right-angles to each other the edges ofthe walls 18 being beveled as at 19. in such manner that when the plugs are placed in position with the walls 18 lying flush against one of the pallets 10 and with the square end 20 'of wall 17 restin flush against the edge of an adjacent pallet the beveled portions 19 of wall 18 will rest flush against the side walls of the mold.

Clamps 2] having depending members 22' formed upon the ends thereof are adapted to bind the side walls of the mold together and to hold the ends of said side walls so closely in engagement with the bets 9 that the mold will retain its form as long as said clamps 21 are in position.

The operation of the device is as follows: The parts of the mold having been assembled as shown in Fig. 1 the mold spaces 16 are filled with plas tic material which immediately begins to harden; The clamps 21 are then im-v mediately removed as are also the side walls and end walls. The end plugs arehowever, left in position until a more thorough setting of the material takes place, after which the 'end plugs may also beremov'ed: The pallets are left in position until the blocks have become thoroughly set. i

From the foregoing description itfwill be seen that simple and eflicient means are hereinner walls of the rabin provided whereby a large number of building blocks of this peculiar shape'may be molded at a single operation. It will also be seen that a mold for building blocks is ro-' vided which may be readily assemble or taken apart. l

1v l Vhile the elements herein shown and described are well adapted to serve the purpose for which they are intended, it is to be understood that the invention is not limited to the precise construction set forth, but includes within its purviewv such changes as may be beveled outer walls adapted to lie parallel made Within the scope of the appended with the side walls of the mold and having claims; 0 V inner walls, forming the ends of the mold, ar- Having described my invention, what I ranged at right angles to said pallet. 6 claim is: f a lntestimony whereof, I. afiix my signature 15 A mold comprising se arable side and end in presence of two witnesses. walls, a plurality of- Z- aped :pallets 'slant- 7 AUGUSTUS 0'. THOMAS. ingly arranged between the side walls of the Witnesses: v

mold a plurality of skeleton spacing mem- I A. J. MERCER,

10 here for spacing said pallets apart and having GRACE GREVES. 

